Road-making



c. J. ABERG.

ROAD MAKING.

APPLICATION FILED SEPT.26, I916.

Patented Jan. 6, 1920.

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0. J. KBERG.

ROAD MAKING.

APPLICATION FILED SEPT. 26, 1916.

0 04 mm? n DOE H 4 as H dm 68 m2 W n@ Di In veriiar Cir Z Mia-s Air/urn e2 CARL JULIUS ABERG, OF STENSTCRP, SWEDEN.

ROAD-MAKIN G.

Specification of Letters Patent.

Patented Jan. 6, 1920.

Application filed September 26, 1916. Serial No. 122,282.

To all whom it may concern."

Be it known that I, CARL JULIUs ABERG, master builder, a subject of the King of Sweden, residing at Stenstorp, Sweden, have invented certain new anduseful Improvements in Road Making.; ,and l dohereby declare the following to bee full, clear, and exact description of the invention, such as will enable others skilled which it 'appertains to make and use the same, reference being had to the accompanying drawings, and to letters or reference marked thereon, which form a part of this specification. r

My invention relates to road making and it has for its chief object to reduce the num ber of workmen necessary for producing a roadway made of macadam, crushed rock or the like. Another object 1s to provide a method of road making in which the stones to be discharged on to the road bed are crushed on board avehicle which is propelled during the crushing operation. ,Another object breaking stones and means for delivering stones onto the road bed with spreading the broken stones in an even layer andmeans for compacting or rolling the road bed before, or after, or both before and after the layer of stones has been spread thereon. A further object of my invention is generally structure and accelerate the operation of road making machines.

In the accompanying drawings which illustrate by way of example various embodiments of my invention:

Figure 1 is a side elevation of my improved roadmaking" machine; Fig. 2is a'pla'n t ereof; Fig. Fig.2; p

Fig. 4 isa side elevation 'ofa modified form of road making machine;

F ig, 5 is a planf of'the stone spreading device shown in Fig. 4;

Fig. 6 is a side elevation of spreading device;

Fig. 7 is a plan thereof;

Fig. 8 is a sectional view of a third form of another form "of spreading device Fig. 9 is a plan thereof; I Fig, 10 is a sectional view ofa fourth form of spreading device;

Fig. 11 is a plan thereof;.

in the art tois to provide an improved road making machine combining means for I form part of a ating the stone to improve the '14 and 15 3 is a detail section on the line A B,

25 has a threaded portion similarly threaded bore in Fig. 12 is a front elevation of an improved compactingroller.

Referring to Figs. 1 to 3, the tractor engine and the. stone breaker; are mounted on separate frames designated by l and 2 re .spectively and connected with each other by comprising two 5 which rests on a supporting lug 6 on therear of the tractor frame;

the lower end of the screw it is provided with an eye 7 loosely engaged by a horizontal pin 8 which connects the front end of the bars 3. rear ends the bars 3 are rigidly connected together by means of a cross piece or lug At their- 9 which-is supported between two lugs 11 on the stone breaker frame and is loosely engaged by a vertical pin 10 secured to the lugs 11.

In the space between the two parallel bars are located two sprocket wheels 12 and which are journaled in the bars 3 and driving connection for actubreaker shaft 15 from the power shaft 14 of the tractor. This driving connection further comprises sprockets 16 and 17 which are mounted on the shafts respectively and connected through suitable chains 18 and 19 with sprockets 20 and 21 which are universally jointed at 22 and 23 to the sprockets 12 and 13 respectively, (Fig. 2).

he stone spreading device or plow comprises two diverging plates or blades 24 forming a wedge wh ch is pivotally mount- {ed at its apex .on'a vertical shaft 25 journa-led in lugs 26 end' of the frame shaft 25 is provided with two projections projecting from the rear 2. At its lower end the 28 and 29 which embrace the front ends of the plates 24. At its upper end the shaft which engages a the lug 26 and is provided with a handwheel 27 whereby the elevation of the frontend of the plow over the ground can be varied as desired. plow is carried by a The rear end of the pair of small wheels 30 whose axle 33 is formed of two telescopic sections connecting together the rear ends of the blades 24=.

' at one place will be cross bar of a The axle 33 is mounted in bearings 35 which may be raisedor lowered by means of threaded rods 32 provided with hand wheels 31. Suitable runners'may, if desired, be used instead of the carrying wheels 30. By operating the hand wheels 27 and 31 it is thus possible to vary the elevation of the plates 24 in order to obtain a uniform layer of stones of the desired thickness.

As shown in Figs. 1 and 2, the tractor is mounted on heavy rollers which compact the road bed beforethe broken stones are spread thereon. The stones are discharged from the stone breaker in front of the plow so that the stones which may be in excess defiected along the plates 24 to some other. point where the thickness of the string'or layer discharged from the stone breaker is less. The rear end of the plow is preferably loaded with a weight in order to hold the wheels 30 firmly pressed against the ground.

At their lower ends the blades 24 are preferably provided with horizontal flanges 34 having a sharp front edge to enable the plow to cut its way through the mass of broken stones, whereby the spreading of such mass will be greatly facilitated.

Any suitable driving means may be used to drive the tractorand the stone breaker. I may, for example, drive the stone breaker by means of an electric motor receiving its current from a generator driven by' an internal combustion engine on the tractor frame.

In Fig. 4 I have shown an embodimentof the invention which is more particularly intended for use in cases where a machine of large capacity is not required. The stone breaker is herein shown as being mounted on the tractor frame 40 so that the rollers 41 on which this frame is mounted will support the combined weight of the engine 43 and stone breaker 42. The engine is adapted to drive both the tractor and the stone breaker at the same time by means of suitable chains 45.

As inthe first example the plow shown in Fig. 4 is adapted to be adjusted vertically with respect to the machine frame. The

two diverging blades 44 of the plow are connected with each other, at an intermediate point of their length, by means of the front frame 47 in which are journaled a pair of rollers 57 which serve to compact the macadam spread in a uniform layer by the plow members 44. Two or more boxes 48 arranged on either sides of the rollers 57 may be. filled with stones or other suitable weights when it is desired to increase the compacting action of the rollers 47. The plow members 44 may conveniently beprovided with a joint at the point where they are connected with the frame 47 so that their ends may be moved toward or away roller frame.

In Figs. 6 and 7 I have illustrated a device adapted to spread the macadam on the road while it is being discharged from the breaking device. This device consists of an inclined plate 49 which increases in width from its upper end toward its lower end and isso' proportioned that the lengthof its lower transverse edge is substantially equal to the required width of the layer of macadam. The plate 49 is. provided with upstanding side walls 39 and a number of diverging longitudinal partitions 50 whereby the macadam fed at the narrow upper end of the inclined plate will be evenly distributed over the whole width of the lower end of the road bed.

In Figs. 8 and 9 I have shown a spreading device comprising two co-aXial hollow drums 51 arranged symmetrically with respect to the discharge opening of the stone breaker. The drums 51 are each provided internally with a screw shaped partition and with peripheral apertures 52 the size of which may be regulated by means of suitable shutters. The drums may be rotated from the driving mechanism of the breaker by means of suitable connections such as gears, a chain or a belt. It will be readily understood that as the broken stones are fed to the inner ends of the hollow drums 51, they will be moved diately before the macadam is spread thereon. With the construction shown in Figs. 4 to 9 the machine compacts the road bed before as well as immediately after the spreading of the macadam. I shall now describe with reference to Figs. 10 and 11 a form of spreading device which is adapted to be secured to the front part of the machine frame so that the rollers carrying the machine will act on the road bed only after the macadam has been spread thereon. This spreading device which combines elements of the device in Figs. 4 and 5 and Figs. 6 and 7 respectively, consists of an inclined plate 59 and a snowplow-shaped member60 below id plate. The plate 59.is tapered to conform to the shape of the member 60 and it is curved downwardly on three sides from a point (shown by a dotted circle in Fig. 10) where the macadam is fed from the stone breaking device. Radial partitions 58 are provided to distribute the macadam in an even layer. The spreading device is mounted on the front edge of the machine frame which .to- 3 the machine rolls the road bed immemoves in the direction of the arrow (Fig.

10) so that the macadam which tumbles down along the front and side portions of the-plate 59, will be engaged by the plowshaped member 60 which will spread the materialin an even layer upon the road.

Fig. 12 shows a preferred form of roller which may be adopted for the rollers for compacting thevroad bed before as well as after the spreading of the macadam. As shown these rollers or sets of rollers have a curved generatrix which conforms to the profile of the road.

While the invention has been described with particular reference to certain details of construction, the same is not to be considered as limited thereto, as many changes can be made and still fall within the scope of the invention set forth in the following claims.

I claim as my invention:

1. A road making machine comprising a vehicle, means for propelling said vehicle, and means operatively connected with said propelling means for breaking stones and causing the broken stones to be discharged onto the road bed at a speed proportional to the rate of travel of the vehicle, both said means being carried by said vehicle.

2. A road making machine comprising a v vehicle, a stone breaker on said vehicle,

means for simultaneously propelling said vehicle and actuating said stone breaker at a speed proportional to the rate of travel of said vehicle, means for directly discharging the broken stones from the stone breaker onto the road bed, and means for rolling the discharging stones as the, vehicle is being propelled.

3. A road making machine comprising a vehicle having a frame and a drivin axle, a source of power and a stone brea er on said frame, connections between said source of power, stone breaker and driving axle for simultaneously operating said stone breakerand rotating said driving axle, means for discharging the broken stones onto the road bed, and means for rolling the discharged stones as the vehicle is being propelled.

4.. A'road making machine comprising a vehicle .havinga frame and a driving axle, a source of power and a stone breaker rigidly mounted on said frame, connections between said source of power, stone breaker and driving axle for simultaneously operating 'said stone breaker and rotating said driving axle, means for discharging the stones from said stone breaker onto the road bed as a freely running stream, and means for laterally spreading said stream without interrupting the same.

5. A road making machine comprising a vehicle having a frame and a driving axle, a source of power and a stone breaker rigidly mounted on said frame, connections between said source of power, stone breaker and driving axle for simultaneously operating said stone breaker and rotating said driving axle, means for discharging the stones from said stone breaker onto the road bed as a freely running stream, means for laterally spreading said stream without.interrupting the same, and means for rolling the discharged stones over the whole width of the layer formed.

6. A road making machine comprising a vehicle having a frame and a driving axle, a source of power and a stone breaker rigidly mounted on said frame, connections between said source of power, stone breaker and driving axle whereby the latter two may be operated simultaneously by said source of power, means for discharging the broken stones onto the roadbed and means for spreading sald stones in a lateral direction -while they are being discharged, said spreading means comprising an inclined surface sloping forwardly and laterally from a point at the front of the vehicle and a plow shaped member at the lower edge of said surface.

7. A road making machine comprising a vehicle having a frame, a driving axle and compacting rollers, a source of power and a stone breaker rigidly mounted on said frame, connections between said source of power, stone breaker and driving axle whereby the latter two may be operated simultaneously by said source of power, means for dischargin the broken stones onto the roadbed in ront of said rollers, and a spreading member inserted in the path of the stones being discharged, said spreading member comprising a forwardly and laterally sloping shell projecting from the front of the vehicle, radially disposed partitions on said shell for guiding the falling stones, and a plow shaped member at the CARL JULIUS ABERG.

Witnesses:

GUSTAF AooLr Arson, OSCAR GRAHN. 

